CST – Computer Simulation Technology

Analyzing HF & LF RadHaz Scenarios with 3D EM Simulation

Recording date: November 3, 2016

60 min.

English

 

Modern technology means that people are exposed to electromagnetic fields almost everywhere from a variety of sources. While the field strength is typically low in large distance from the source, in close proximity the induced fields and absorbed power may be high enough to harm the body. High-frequency electromagnetic fields, such as from broadcasting systems, mobile communication, wi-fi and radar, can all potentially pose radiation hazard (RadHaz) problems, as can low-frequency magnetic fields generated by high currents in applications such as welding guns, trains and electric vehicles. 
Various standards exist to regulate device design and installation of antennas and high-power components to avoid RadHaz. As measurement is typically not an option inside the human body, EM simulation is the often only way to analyze the complex field distribution and estimate the resulting hazards in order to ensure a product complies with statutory exposure limits.

 

This webinar will show how complex RadHaz scenarios can be tackled by EM simulation. The webinar will start with an overview of biological EM simulation, discussing human models, material properties, solver technologies and hybrid approaches. This will be followed by examples of RadHaz analysis: a person doing maintenance in a cell phone tower surrounded by various base station antennas, a RadHaz analysis in a military vehicles with various RF antennas, fields induced in a worker operating a welding gun in an industrial environment and finally a person driving an electric car.

Presenter

Tilmann Wittig

Dr. Tilmann Wittig was born in Leverkusen, Germany, in 1972. He holds a Dipl.-Ing. degree in telecommunications and a Ph.D. in electromagnetic simulation technology from the Technical University of Darmstadt, Germany. In 2004 he joined CST, where he works as a Principal Engineer in the areas of antenna and bio-medical simulations as well as computational dosimetry.

 

Materials:

1. Analyzing HF & LF RadHaz scenarios with 3D EM simulation

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